英語(yǔ)翻譯
The evolution of HTML has been a long transition away from how things look and toward what things mean.Gone are the days when web pages were cobbled together in HTML tables to compensate for limited layout controls.(Or,rather,those days should be gone.You know who you are.) Improvements in the language and the rise of CSS allowed web programmers to build pages that looked great for users and made better sense to search engines.
But even with the progress in semantic markup – coding to describe what content conveys,not what it looks like – there has still been the necessary evil of and tags.These semantically meaningless elements continued to be used as a fallback for structure and design when semantic tags fell short.While it was closer to the ideal than tables,it still was programming crutch to fill a shortcoming in the HTML language,and another bit of meaningless code for search engines to work through to get to the stuff with purpose.